Platen printing press



Jan. 2o, 1931.

G. SPI'ESS PLATEN PRINTING PRE'ss Filed Dec. 17 1929 3 Sheets-Sheet 1 Jan; 20, 1931.l

G. sPlEss PLATEN PRINTING PRESS s sheets-sheet 2' Filed Devo. 1v. 1'929 Jan. 20, 1931. G. sPlEss PLATEN PRINTING PRESS Filed Dec. 1v. 1929 A s sheets-sheet 3 I I Infanto/n' A' Paferntved Jan. 20,

`The platen l mi@vK Onlyin .partfbybmken,linesf f so mbe Shaving Wol- 11.119115 :facili-.ty and Speed f K Fig- K2 y aside-eljevat-011 0f the flemntp Dia Vplatell press;v Y j Fig. 3 is a section pn the K 1K7 and,

Figs. .endfare sectiensyto a ,largerfscale P y Fig. 7- slfa section on the L .Fi-g.y 8 is v an e'leva'iengs,

yperscan then be movedby hand in either direction.- `If they are thrust towards the` vplaten face thejbar 6 rocks awa ',from'the rod 32, and if they are thrust `in t e opposite direction-the rod 3,9 is moved,compres sing the spring 45. i

When theplatenrocks forwards for impression, and the grippers are pressed against its face, the spring 45 is compressed.y

VApproximately at the time. ofgimpression the t `valve is opened to connect the` tubes and 22, so that when the lplaten swings backgandg:

`ultimately swings clear of thel grippers 11 the sheet 46 1s retainedby the vgri pers by suc-i tion, as shown in Fig. r2. At a out` thetime when the platen has completed its rearward 'swingthe :attendant takes holdlof the sheet,

fjzok ff andthe valve is closedby the ,abutmentj29,fs`o

thatA the grippers Vreleaseiithe sheet.

Each-gripperfl'l mayv with advanta eheV constructed of two `'parallel strips k4 :of

iano'pwires, at the edges`,as"shownin steel,"spaced apart-,by wires, prefer'- a' Y Fig. the wires'fbeing soldered, welded or otherwise joined to the'steel strips.

Y Thegrippers are capable o ffslidin movej ment in their holders 10, in the direction' of their'length, for urposes "of adjustment, themovementbeing imited 'in one direction Y abutments 49 on the grippers".""fi

2Inthe modification 'shownin' FiggzSlthe endv of the Vgrip er.' `A rubbersheath 51 Htsat the base of the cup, 'a hole `53l registering with theV orifice 'of thew gripper.` 'The cu fis,V

- f 'gripper lh'asarectangular' bendn at "the 'upper r "fend, and the foritice 14 is in the horizontal sa'v part 50.V j Y,

vIn the-modification -shownin Figs.' 9 toll there is arubber suction cupfat the upper overthe topo 'the gripper, and ,to this is attached the cup'52, there eing'inthe sheath,

- compressed between the platen 'and the-1mpression surface (Fig. expand again, whentheplaten swings fback,

creates la suctional effect assistingfthe suction j dueto the pump. VThe cup fully expandsand releases the sheet when air` isadmitted to the grippergf A V V",What Iclaimk as my inventionand desire f to securepby Letters Patent of thellflnited ,St`atkesis:-l n

`1. '.'In a platen prmting press the Ycombina-- Vtion ofV a platen, sheet grippers for holding a sheet onsaid platen, each gripperhaving anair channeltherein and a suction'orificefor' holding the sheet, means pivotallyA` connecting said 'grippers to said platen, meanselasticallypressing said grippers againstthezface' of said platen .when-said platen rocks `forwards vfor impression, and holding said kgrippers clear of said platen face when saidplaten has rocked rearwards, asuction conduit connected to the air channels in saidgrippers,

' and'valve Iy rockedtwards said: A y

IIll'alplaten plllllL-ngv 1p1-ess the Combinathe' arms 15 and in the'otherdirection by? trolling said suction conduit.

f 5. Ina platen plrintlng press ks eet grippers for holding -a .sheet on said platen, each gripper having an incassa mechanism actuated by said platen controlling said suction conduit. Y

2. In a platen printing press the combination of a platen, sheet grippers for holding a sheet on said platen,'each gripper having an air channel therein and a suction oriiice kifor'.l'ioldin'g the'sheet, meanspivotally con- Y meeting-said grippers to said platen, means elastical-ly pressingsaid grippers against the facefof said `platen ywhen said platen rocks tionof a platen, sheet v"grlp'pers for holding va sheet'on ksaid latemeach gripperhaving anair lchannelt erein and a suction orifice yfor holdin ythe sheet, andfconsisting'o two elastic stee stripsfacing'each other andtwo f steel wires joined to said'strips at theedges thereof, spacing said strips apart, means pivotally connecting said 'grippers to said platen,

means elastically pressing vsaid* grippers ja ainstthe face'of'said platen when said p aten rocks forwards for impression, and olding said grippers clear of said'platen face `Vwhen' said f latenhas rocked rearwards, a suctlon' con uitlrconnected to vthe air channels in said gri pers', rand valveme'chanism "actuated by said? platen controlling said suc- 'tion'conduit f l' 4. lIn a'platen printing press thecomloination 'of ajplaten; sheet lgrippers for holding asheetonsaid platen, each gripper' having an air channel :therein and a suction orifice vfor holdin 'the sheet, means pivotall-y connectingsai vgrippersl to said platen, said connecting means4 including holders wherein said grlppe'rs are adjustable, meansV elastically pressingjsaidfgri pers against the face of said platen when sai platen" rocks 'forwards for impression', .and holdin saidy grippers clear Vrocked rearwards,7a suction conduit connectedto the air channels in said grippers,y and valve mechanism actuated hyv said platen conthe combina-l tion of a platen,

air channel therein and -a suctionlorifice for holding the sheet, meanspivotally connecting `said grippers yto said platen, said connecting `means including af memberwhereon said grippers are; adjustable' transverselyy of the 'platen-face, means elastically pressing said gri pers against the face of said platen when vsai platen rocks'forwards for impression,

and holding said grippers clear of said platen of'saidf'platen :facel vwensz'tidplatenhas n face* When saidplaten has rocked rearwards,

Y a suction conduitconnected kto the' air chanf i nels in saidv grippers, andvalve mechanism Y actuated by said platencontrolling said suc-r tion-conduit. f

6. In a platen printing thecombinas tion of a platen, sheetzgrippers"fory holding `a sheet on said platen,Y each gripperghavng .Y van air channel` therein and a suction? orifice n 10` for holding the sheet, andrhaving an elastic; v i ,l suction cup, at saidfvorifice, means pivotally connecting Y saidr Agrippersl to said platen, Y 'Y means elastically pressing said grippers" against the ace'of said platen lWhen said platen rocks forwards for impression, and; Y holding said grippers clear ofsaid platen n face when saidplaten has. rocked rearwards, a suction conduit connected .tothe .air chanj l nels v in said grippers, and valve" mechanism I actuated by said platen controlling said suction conduit. *f

7 In a platenprinting press the combinap. tion of a platen7 sheetgrippersfor holding Y asheet on saidvplatenyeach gripper having an air channel therein anda suction'orifie for holdings( the sheet, and having) an f elastic o A sheath and a suctioncup oinedto'said sheath, Y g' Y* said 'cup registering with said'suctonorice, means Vpivotally',.Conn'ectingsaid grip-y pers to said -platen, means elasticallyl'presstrolling said suction conduit.

.so Y' fgenone'srinss'. 

